ELECTRICAL CONDUCTIVITY OF BARIUM OXIDE SINGLE CRYSTALS AS A FUNCTION OF TEMPERATURE AND EXCESS BARIUM DENSITY

摘要

The conductivity of BaO single crystals colored blue by excess barium increases with temperature over the range from 500 to 900K.The results indicate that each excess barium atom in blue BaO crystals acts as an electron donor which contributes at least one electron to the conduction system at temperatures above 900K.